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.TH CAL 1 "Mar 7, 2017"
.SH NAME
cal \- display a calendar
.SH SYNOPSIS
.LP
.nf
\fBcal\fR [ [\fImonth\fR] \fIyear\fR]
.fi

.SH DESCRIPTION
.LP
The \fBcal\fR utility writes a Gregorian calendar to standard output. If the
\fIyear\fR operand is specified, a calendar for that year is written. If no
operands are specified, a calendar for the current month is written.
.SH OPERANDS
.LP
The following operands are supported:
.sp
.ne 2
.na
\fB\fImonth\fR\fR
.ad
.RS 9n
Specify the month to be displayed, represented as a decimal integer from
\fB1\fR (January) to \fB12\fR (December). The default is the current month.
.RE

.sp
.ne 2
.na
\fB\fIyear\fR\fR
.ad
.RS 9n
Specify the year for which the calendar is displayed, represented as a decimal
integer from \fB1\fR to \fB9999\fR. The default is the current year.
.RE

.SH ENVIRONMENT VARIABLES
.LP
See  \fBenviron\fR(7) for descriptions of the following environment variables
that affect the execution of \fBcal\fR: \fBLANG\fR, \fBLC_ALL\fR,
\fBLC_CTYPE\fR, \fBLC_TIME\fR, \fBLC_MESSAGES\fR, and \fBNLSPATH\fR.
.sp
.ne 2
.na
\fB\fBTZ\fR\fR
.ad
.RS 6n
Determine the timezone used to calculate the value of the current month.
.RE

.SH EXIT STATUS
.LP
The following exit values are returned:
.sp
.ne 2
.na
\fB\fB0\fR\fR
.ad
.RS 6n
Successful completion.
.RE

.sp
.ne 2
.na
\fB\fB>0\fR\fR
.ad
.RS 6n
An error occurred.
.RE

.SH ATTRIBUTES
.LP
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Standard
.TE

.SH SEE ALSO
.LP
.BR attributes (7),
.BR environ (7),
.BR standards (7)
.SH NOTES
.LP
An unusual calendar is printed for September 1752. That is the month 11 days
were skipped to make up for lack of leap year adjustments. To see this
calendar, type:
.sp
.in +2
.nf
cal 9 1752
.fi
.in -2
.sp

.sp
.LP
The command \fBcal 83\fR refers to the year 83, not 1983.
.sp
.LP
The year is always considered to start in January.
